#BA5D16

CSS

:root {
  --polished-copper: #ba5d16;
  --polished-copper-rgb: 186 93 22;
  --polished-copper-oklch: oklch(0.58 0.142 51.3);
}

.element {
  color: var(--polished-copper);
  background-color: hsl(26 79% 41%);
  border-color: oklch(0.58 0.142 51.3);
}

Tailwind CSS v4

@theme {
  --color-polished-copper: #ba5d16;
  --color-polished-copper-50: #ffebd0;
  --color-polished-copper-100: #ffdcbc;
  --color-polished-copper-200: #ffc49b;
  --color-polished-copper-300: #f0a370;
  --color-polished-copper-400: #e08449;
  --color-polished-copper-500: #cd6510;
  --color-polished-copper-600: #ad5613;
  --color-polished-copper-700: #8b4510;
  --color-polished-copper-800: #68310c;
  --color-polished-copper-900: #492107;
  --color-polished-copper-950: #301000;
}

SCSS

$polished-copper: #ba5d16;
$polished-copper-rgb: 186, 93, 22;
$polished-copper-light: mix(#fff, $polished-copper, 20%);
$polished-copper-dark: mix(#000, $polished-copper, 20%);

.element {
  color: $polished-copper;
  box-shadow: 0 0 0 2px rgba($polished-copper, 0.35);
}